Author: K. P. GeorgePublisher:
ISBN:
Category : FREDD1 (Computer program)
Languages : en
Pages : 95
Book Description
Resilient Modulus of Subgrade Soils Using Gyratory Testing Machine
Author: K. P. GeorgePublisher:
ISBN:
Category : FREDD1 (Computer program)
Languages : en
Pages : 95
Book Description
Resilient Testing of Soils Using Gyratory Testing Machine
Author: K. P. GeorgeNondestructive Testing of Pavements and Backcalculation of Moduli
Author: ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving MaterialsPublisher: ASTM International
ISBN: 0803118651
Category : Fatigue
Languages : en
Pages : 528
Book Description
The proceedings of June 1993 international symposium held in Atlanta, Georgia, called specifically to develop and standardized evaluation procedures for non-destructive methods of testing pavements. The 29 papers discuss analytical models and techniques, measurement and calculation techniques in the field and laboratory, problems and errors associated with backcalculation methods and design parameters, and testing for other pavement uses. Also includes a history of the quest for a standard and the status of that effort. Reproduced from typescripts. Annotation copyright by Book News, Inc., Portland, OR
Intelligent and Soft Computing in Infrastructure Systems Engineering
Author: Kasthurirangan GopalakrishnanPublisher: Springer Science & Business Media
ISBN: 3642045855
Category : Computers
Languages : en
Pages : 330
Book Description
The term “soft computing” applies to variants of and combinations under the four broad categories of evolutionary computing, neural networks, fuzzy logic, and Bayesian statistics. Although each one has its separate strengths, the complem- tary nature of these techniques when used in combination (hybrid) makes them a powerful alternative for solving complex problems where conventional mat- matical methods fail. The use of intelligent and soft computing techniques in the field of geo- chanical and pavement engineering has steadily increased over the past decade owing to their ability to admit approximate reasoning, imprecision, uncertainty and partial truth. Since real-life infrastructure engineering decisions are made in ambiguous environments that require human expertise, the application of soft computing techniques has been an attractive option in pavement and geomecha- cal modeling. The objective of this carefully edited book is to highlight key recent advances made in the application of soft computing techniques in pavement and geo- chanical systems. Soft computing techniques discussed in this book include, but are not limited to: neural networks, evolutionary computing, swarm intelligence, probabilistic modeling, kernel machines, knowledge discovery and data mining, neuro-fuzzy systems and hybrid approaches. Highlighted application areas include infrastructure materials modeling, pavement analysis and design, rapid interpre- tion of nondestructive testing results, porous asphalt concrete distress modeling, model parameter identification, pavement engineering inversion problems, s- grade soils characterization, and backcalculation of pavement layer thickness and moduli.
FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1992
Author: Resilient Modulus Testing for Pavement Components
Author: Mary Stroup-GardinerPublisher: ASTM International
ISBN: 0803134614
Category : Pavements
Languages : en
Pages : 274
Book Description
"Resilient modulus indicates the stiffness of a soil under controlled confinement conditions and repeated loading. The test is intended to simulate the stress conditions that occur in the base and subgrade of a pavement system. Resilient modulus has been adopted by the U.S. federal highway administration as the primary performance parameter for pavement design. We thank those who prepared these papers, the reviewers who provided anonymous peer reviews, and those who participated in the symposium. We hope this STP encourages more work to improve the testing standard and the value of the Resilient Modulus test."
FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1991
Author: Transportation Research Record
Author: A Model for the Prediction of Subgrade Soil Resilient Modulus for Flexible-pavement Design
Author: Beresford O. A. DaviesPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 182
Book Description
Subgrade soil plays a very important role in the construction of roadways. Before the use of asphalt in the construction of roadway, roads were being constructed based on experience. The introduction of paving asphalt in road construction has led to the development of engineering procedures and designs for the methods of construction. The resilient modulus of the underlying material supporting the pavement is now considered as a key material property in the AASHTO mechanistic-empirical design procedure. Attempts have been made by researchers to predict the Subgrade resilient modulus from laboratory/field experimental methods based on the soil properties. This research seeks to develop a model for predicting the subgrade resilient modulus due to environmental conditions by considering the seasonal variation of temperature and moisture content which affects the soil. The limitation of this research model is that it cannot be used universally since environmental conditions vary from place to place, however, it can be modified to suit other local environmental conditions. The detrimental effect of low resilient modulus of subgrade soil is observed in the damaged analysis.
Resilient Properties of Subgrade Soils
Author: Marshall R. ThompsonPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 82
Book Description